Debit and credit card transaction device

ABSTRACT

The present utility provides a Debit and Credit card transaction device, wherein it comprises a microprocessor or micro-controller (MCU), a magnetic stripe card reader or a smart card reader and a power regeneration circuit, wherein the microprocessor connects with the magnetic stripe card reader or smart card reader, the power regeneration circuit and the microphone input of the communication device, wherein the power regeneration circuit connects with the microprocessor, magnetic stripe card reader or smart card reader and the headphone output of the communication device. The present utility presents a Debit and Credit transaction device which can be used in conjunction with a communication device. It is a low cost device which can carry out secure debit, PIN debit and credit transactions.

FIELD OF TECHNOLOGY

The present utility model provides a transaction device, specifically for a transaction device which enables a communication device to carry out secure debit, PIN debit and credit transactions.

BACKGROUND OF THE TECHNOLOGY

At present, commercial transactions such as Debit Card and Credit Card transactions over ATM and Point-of-sale (POS) devices are very common. Wireless communication devices or devices with communication capabilities such as a mobile or a cellular phone, a personal digital assistant (PDA), a Smart Phone, a Blackberry, an iPhone, netbook and the like, are widely used. A cost effective method to enable such devices to carry out secure commercial transactions is desired.

SUMMARY OF THE UTILITY MODEL

In order to achieve the above mentioned, the present invention proposed a transaction device which is plugged into the earpiece of a communication device to enable such communication device to carry out secure debit, PIN debit and credit transactions.

A Debit and Credit transaction device which comprises a microprocessor or micro-controller (MCU), a magnetic stripe card reader or a smart card reader and a power regeneration circuit, wherein the microprocessor connects with the magnetic stripe card reader or smart card reader, the power regeneration circuit and the microphone input of the communication device, wherein the power regeneration circuit connects with the microprocessor, magnetic stripe card reader or smart card reader and the headphone output of the communication device. The Debit and Credit transaction device is connected to the communication device via earpiece.

The earpiece of the communication device normally has a microphone input and a headphone output. The headphone output of the earpiece of the communication device is connected to the input of the power regeneration circuit. The communication device plays a sound file to its headphone output. Electrical signal will then be generated from its headphone output. The power regeneration circuit will convert this electrical signal into stable DC power with appropriate voltage level to power the transaction device in the present invention.

A Debit and Credit transaction device as described, after it is powered, the magnetic stripe card reader or smart card reader will capture card data and send the data to the micro-processor or micro-controller. The micro-processor or micro-controller then encrypts the data, encodes the data by channel coding such as Manchester coding or bit stuffing, modulates the data by Frequency Shift Keying (FSK)/Dual-tone Multi-frequency (DTMF) or Orthogonal Frequency Division Multiplexing (OFDM) and sends the data to the microphone input of the earpiece of the communication device.

After the communication device has received the modulated card data from the present invention, it sends the modulated card data as audio signals to a server or processor for commercial transactions.

Alternately, a software application can run on the communication device to receive the modulated data. After receiving the modulated data, the software demodulates the data, decodes the data and sends the decoded digital data to a server or processor for commercial transactions.

The present invention presents a Debit and Credit transaction device which can be used in conjunction with a communication device. It is a low cost device which can carry out secure debit, PIN debit and credit transactions.

EXPLANATION FOR ATTACHED DRAWING

FIG. 1 is the structural drawing and workflow of the device.

FIG. 2 is the first method by which the circuit converts electrical audio signals into electricity.

FIG. 3 is the second method by which the circuit converts electrical audio signals into electricity.

FIG. 4 is the third method by which the circuit converts electrical audio signals into electricity.

PARTICULAR IMPLEMENTATION METHOD

As described in FIG. 1, a Debit and Credit transaction device which comprises a microprocessor or micro-controller (MCU), a magnetic stripe card reader or a smart card reader and a power regeneration circuit, wherein the microprocessor connects with the magnetic stripe card reader or smart card reader, the power regeneration circuit and the microphone input of the communication device, wherein the power regeneration circuit connects with the microprocessor, magnetic stripe card reader or smart card reader and the headphone output of the communication device. The Debit and Credit transaction device is connected to the communication device via earpiece.

In FIG. 1, a piece of software is running on the communication device. The software plays a sound wave continuously to its headphone output. Electrical signal will then be generated from its headphone output. The power regeneration circuit will convert this electrical signal into stable DC power with appropriate voltage level to power the transaction device. After the transaction device is powered, the magnetic stripe card reader or smart card reader will capture card data and send the data to the micro-processor or micro-controller. The micro-processor or micro-controller then encrypts the data, encodes the data by channel coding such as Manchester coding or bit stuffing, modulates the data by Frequency Shift Keying (FSK) / Dual-tone Multi-frequency (DTMF) or Orthogonal Frequency Division Multiplexing (OFDM) and sends the data to the microphone input of the earpiece of the communication device. The software can run on the communication device to receives the modulated card data. After receiving the modulated data, the software demodulates the data, decodes the data and sends the decoded digital data to a server or processor for commercial transactions.

Alternately, no software is required to run in the communication device. The communication device makes a phone call to a remote server. The remote server plays a sound wave continuously. Electrical signal will then be generated from the communication device's headphone output. The power regeneration circuit will convert this electrical signal into stable DC power with appropriate voltage level to power the transaction device. After the transaction device has been powered, the magnetic stripe card reader or smart card reader will capture card data and send the data to the microprocessor or micro-controller. The microprocessor or micro-controller encrypts the data, encodes the data by channel coding such as Manchester coding or bit stuffing, modulates the data by Frequency Shift Keying (FSK)/Dual-tone Multi-frequency (DTMF) or Orthogonal Frequency Division Multiplexing (OFDM) and sends the modulated data to the microphone input of the communication device. The modulated data is then sent to the remote server. The remote server demodulates the data, decodes the data and sends the data to a server or processor for commercial transactions.

In FIG. 2-4, the circuit consists of diode-capacitor voltage multiplier or transformer to convert the electrical signal in the audio output generated by the communication device into a stable DC power with appropriate voltage level to power the transaction device.

The Debit and Credit transaction device provided by the embodiment of the present invention is described in details hereinbefore. As for the technical personnel generally skilled in the art, the embodiment and application scope may be changed to some extent according to the concept of the embodiment of the present invention. Therefore, the content of the specification does not set a limit on the present invention. 

1. A Debit and Credit transaction device which comprises a micro-processor or micro-controller (MCU), a magnetic stripe card reader or a smart card reader and a power regeneration circuit which converts the electrical signal in the audio output generated by the communication device into a stable DC power with appropriate voltage level to power the transaction device, wherein the microprocessor connects with the magnetic stripe card reader or smart card reader, the power regeneration circuit and the microphone input of the communication device, wherein the power regeneration circuit connects with the microprocessor, magnetic stripe card reader or smart card reader and the headphone output of the communication device.
 2. A Debit and Credit transaction device of claim 1, characterized in that the transaction device is connected to the communication device via the earpiece.
 3. A Debit and Credit transaction device of claim 1, characterized in that the transaction device converts electricity from the audio signals sent out by the communication device via headphone output.
 4. A Debit and Credit transaction device of claim 1, characterized in that the transaction device captures card data from a magnetic card reader or a smart card reader and encrypts the data.
 5. A Debit and Credit transaction device of claim 1, characterized in that the transaction device captures card data from a magnetic card reader or a smart card reader and encodes the data by channel coding such as Manchester coding or bit stuffing.
 6. A Debit and Credit transaction device of claim 1, characterized in that the transaction device modulates the encrypted data by Frequency Shift Keying (FSK)/Dual-tone Multi-frequency (DTMF) or Orthogonal Frequency Division Multiplexing (OFDM) and sends the modulated data to the microphone input of the communication device.
 7. A Debit and Credit transaction device of claim 1, characterized in that the transaction device enables a communication device to carry out secure debit, PIN debit and credit transactions. 